Food

Nesting

Behavior

Conservation

Philadelphia Vireo populations appear to have increased between 1966 and 2014, according to the North American Breeding Survey. Partners in Flight estimates a global breeding population of 4 million birds, with 1% breeding in the U.S., 99% in Canada, and 37% migrating through or wintering in Mexico. The species rates a 9 out of 20 on the Continental Concern Score. It is a U.S.-Canada Stewardship species, and is not on the 2014 State of the Birds Watch List.Back to top